+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 8hma | ||||||
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タイトル | Cryo-EM structure of human high-voltage activated L-type calcium channel CaV1.2 in complex with tetrandrine (TET) | ||||||
要素 |
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キーワード | MEMBRANE PROTEIN / tet bound state | ||||||
機能・相同性 | 機能・相同性情報 voltage-gated calcium channel activity involved in regulation of presynaptic cytosolic calcium levels / positive regulation of calcium ion transmembrane transport via high voltage-gated calcium channel / regulation of membrane repolarization during action potential / Presynaptic depolarization and calcium channel opening / positive regulation of high voltage-gated calcium channel activity / membrane depolarization during atrial cardiac muscle cell action potential / Phase 2 - plateau phase / calcium ion transmembrane transport via high voltage-gated calcium channel / positive regulation of muscle contraction / membrane depolarization during AV node cell action potential ...voltage-gated calcium channel activity involved in regulation of presynaptic cytosolic calcium levels / positive regulation of calcium ion transmembrane transport via high voltage-gated calcium channel / regulation of membrane repolarization during action potential / Presynaptic depolarization and calcium channel opening / positive regulation of high voltage-gated calcium channel activity / membrane depolarization during atrial cardiac muscle cell action potential / Phase 2 - plateau phase / calcium ion transmembrane transport via high voltage-gated calcium channel / positive regulation of muscle contraction / membrane depolarization during AV node cell action potential / membrane depolarization during bundle of His cell action potential / L-type voltage-gated calcium channel complex / photoreceptor ribbon synapse / positive regulation of calcium ion transport / cardiac muscle cell action potential involved in contraction / NCAM1 interactions / regulation of ventricular cardiac muscle cell membrane repolarization / calcium ion transport into cytosol / calcium ion import / Sensory processing of sound by inner hair cells of the cochlea / regulation of calcium ion transmembrane transport via high voltage-gated calcium channel / voltage-gated calcium channel complex / neuromuscular junction development / calcium ion import across plasma membrane / Phase 0 - rapid depolarisation / neuronal dense core vesicle / regulation of heart rate by cardiac conduction / regulation of calcium ion transport / voltage-gated calcium channel activity / T-tubule / visual perception / sarcoplasmic reticulum / protein localization to plasma membrane / Regulation of insulin secretion / calcium ion transmembrane transport / postsynaptic density membrane / calcium channel activity / Adrenaline,noradrenaline inhibits insulin secretion / cellular response to amyloid-beta / calcium ion transport / actin filament binding / presynapse / chemical synaptic transmission / perikaryon / dendrite / extracellular exosome / metal ion binding / plasma membrane 類似検索 - 分子機能 | ||||||
生物種 | Homo sapiens (ヒト) | ||||||
手法 | 電子顕微鏡法 / 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 3.4 Å | ||||||
データ登録者 | Wei, Y. / Yu, Z. / Zhao, Y. | ||||||
資金援助 | 中国, 1件
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引用 | ジャーナル: Nat Commun / 年: 2024 タイトル: Structural bases of inhibitory mechanism of Ca1.2 channel inhibitors. 著者: Yiqing Wei / Zhuoya Yu / Lili Wang / Xiaojing Li / Na Li / Qinru Bai / Yuhang Wang / Renjie Li / Yufei Meng / Hao Xu / Xianping Wang / Yanli Dong / Zhuo Huang / Xuejun Cai Zhang / Yan Zhao / 要旨: The voltage-gated calcium channel Ca1.2 is essential for cardiac and vessel smooth muscle contractility and brain function. Accumulating evidence demonstrates that malfunctions of Ca1.2 are involved ...The voltage-gated calcium channel Ca1.2 is essential for cardiac and vessel smooth muscle contractility and brain function. Accumulating evidence demonstrates that malfunctions of Ca1.2 are involved in brain and heart diseases. Pharmacological inhibition of Ca1.2 is therefore of therapeutic value. Here, we report cryo-EM structures of Ca1.2 in the absence or presence of the antirheumatic drug tetrandrine or antihypertensive drug benidipine. Tetrandrine acts as a pore blocker in a pocket composed of S6, S6, and S6 helices and forms extensive hydrophobic interactions with Ca1.2. Our structure elucidates that benidipine is located in the D-D fenestration site. Its hydrophobic sidechain, phenylpiperidine, is positioned at the exterior of the pore domain and cradled within a hydrophobic pocket formed by S5, S6, and S6 helices, providing additional interactions to exert inhibitory effects on both L-type and T-type voltage gated calcium channels. These findings provide the structural foundation for the rational design and optimization of therapeutic inhibitors of voltage-gated calcium channels. | ||||||
履歴 |
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-構造の表示
構造ビューア | 分子: MolmilJmol/JSmol |
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-ダウンロードとリンク
-ダウンロード
PDBx/mmCIF形式 | 8hma.cif.gz | 469.1 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb8hma.ent.gz | 表示 | PDB形式 | |
PDBx/mmJSON形式 | 8hma.json.gz | ツリー表示 | PDBx/mmJSON形式 | |
その他 | その他のダウンロード |
-検証レポート
文書・要旨 | 8hma_validation.pdf.gz | 1.6 MB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 8hma_full_validation.pdf.gz | 1.7 MB | 表示 | |
XML形式データ | 8hma_validation.xml.gz | 77.5 KB | 表示 | |
CIF形式データ | 8hma_validation.cif.gz | 114 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/hm/8hma ftp://data.pdbj.org/pub/pdb/validation_reports/hm/8hma | HTTPS FTP |
-関連構造データ
関連構造データ | 34891MC 8hlpC 8hmbC M: このデータのモデリングに利用したマップデータ C: 同じ文献を引用 (文献) |
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類似構造データ | 類似検索 - 機能・相同性F&H 検索 |
-リンク
-集合体
登録構造単位 |
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1 |
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-要素
-Voltage-dependent ... , 2種, 2分子 EF
#1: タンパク質 | 分子量: 243947.016 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: CACNA1C / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: A0A0A0MSA1 |
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#3: タンパク質 | 分子量: 121197.406 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: CACNA2D1, CACNL2A, CCHL2A, MHS3 / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: P54289 |
-タンパク質 , 1種, 1分子 H
#2: タンパク質 | 分子量: 70952.688 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: CACNB2, CACNLB2, MYSB / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: Q08289 |
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-糖 , 2種, 12分子
#8: 糖 | ChemComp-NAG / #9: 糖 | ChemComp-BMA / | |
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-非ポリマー , 4種, 7分子
#4: 化合物 | ChemComp-R16 / | ||||
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#5: 化合物 | #6: 化合物 | ChemComp-A1AC9 / | 分子量: 620.734 Da / 分子数: 1 / 由来タイプ: 合成 / 式: C38H40N2O6 / タイプ: SUBJECT OF INVESTIGATION #7: 化合物 | |
-詳細
研究の焦点であるリガンドがあるか | Y |
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-実験情報
-実験
実験 | 手法: 電子顕微鏡法 |
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EM実験 | 試料の集合状態: PARTICLE / 3次元再構成法: 単粒子再構成法 |
-試料調製
構成要素 | 名称: cav1.2alpha2delta1beta2b / タイプ: COMPLEX / Entity ID: #1-#3 / 由来: RECOMBINANT |
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由来(天然) | 生物種: Homo sapiens (ヒト) |
由来(組換発現) | 生物種: Homo sapiens (ヒト) |
緩衝液 | pH: 7.5 |
試料 | 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
急速凍結 | 凍結剤: ETHANE |
-電子顕微鏡撮影
実験機器 | モデル: Titan Krios / 画像提供: FEI Company |
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顕微鏡 | モデル: FEI TITAN KRIOS |
電子銃 | 電子線源: FIELD EMISSION GUN / 加速電圧: 300 kV / 照射モード: FLOOD BEAM |
電子レンズ | モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 2200 nm / 最小 デフォーカス(公称値): 1200 nm |
撮影 | 電子線照射量: 9.6 e/Å2 フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) |
-解析
CTF補正 | タイプ: PHASE FLIPPING ONLY | ||||||||||||||||||||||||
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3次元再構成 | 解像度: 3.4 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 37051 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
拘束条件 |
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